diff --git a/css/less/window.less b/css/less/window.less
index b3b372bbaf07be50c4d243585d8d2020f4889189..6ce39067c1b1d0903304bfe01849e6c23cfe7e91 100644
--- a/css/less/window.less
+++ b/css/less/window.less
@@ -6,6 +6,7 @@
     overflow: hidden;
     background-color: @black-33;
     top: 0%;
+    z-index: 1;
   }
 
   .manifest-info {